Check DNS propagation on 8 resolvers

What this example returns

The dataset’s “Propagation” view shows 11 columns: Domain, Status, Consistent, Consistent (ignoring A/AAAA), Differing types, IPv4 (A), Name servers, MX, Resolvers answered, Resolvers failed, and Differences. See every output field.

What each setting does

The input this example runs Email Deliverability & Domain Security Checker with. “Try this input” opens it in the console, where you can run it as-is or change any field first.

Domains, websites or email addresses domains

github.com, python.org, wikipedia.org

One per line. Domains (scrape.ly), websites (https://www.example.com/page -> example.com) and email addresses (jane@example.com -> example.com) all work. International domain names are converted to punycode. Duplicates are checked once and not charged twice.

DNS record types recordTypes

A, MX, NS, TXT, SOA

Records returned for each domain under 'records' (with TTLs). MX and TXT are always looked up because the email checks need them. In propagation mode these are the types compared across resolvers.

Default: A, AAAA, MX, NS, TXT, CNAME, SOA, CAA → this example uses A, MX, NS, TXT, SOA

Mode mode

DNS propagation check (8 public resolvers)

Propagation asks Cloudflare, Google, Quad9, OpenDNS, AdGuard, DNS4EU, DNS.SB and Mullvad for the selected record types and reports per-resolver answers, a consistent flag and the differences. Same price per domain. Email, blocklist and reverse-DNS settings are not used in this mode.

Default: Full check (records, email authentication, blocklists) → this example uses DNS propagation check (8 public resolvers)

{
  "domains": [
    "github.com",
    "python.org",
    "wikipedia.org"
  ],
  "mode": "propagation",
  "recordTypes": [
    "A",
    "MX",
    "NS",
    "TXT",
    "SOA"
  ]
}

What it costs

You pay for the events the actor reports, such as each result or page it produces. Platform usage is included in the event prices: compute, proxies, browser and storage cost nothing extra.

• Domain checked$0.00085One domain with an answer (records found, no records, does not exist, or broken name servers): DNS records, email authentication, DKIM, blocklists, grade and, in propagation mode, the 8-resolver comparison. Invalid entries, duplicates and unanswered domains are free.

Full pricing

Other ways to run Email Deliverability & Domain Security Checker

• Audit email deliverability for a domain listDomains, websites and email addresses with SPF, DMARC, DKIM, MTA-STS, BIMI, blocklists, reverse DNS and an A-F grade.
• Check a CSV of email addresses on Quad9Pasted CSV of contacts reduced to root domains, with DNSSEC, HTTPS and PTR records and extra DKIM selectors.

All examples of Email Deliverability & Domain Security Checker

About Email Deliverability & Domain Security Checker

Check email deliverability and domain security in bulk: MX and mail provider, SPF with the 10-lookup count, DMARC policy, DKIM keys, MTA-STS, TLS-RPT, BIMI, DNS blocklists for the domain and its mail servers, an email-auth grade A to F, full DNS records and a DNS propagation check. Domains, websites or email addresses in, one row per domain out. No login or API key needed.

Price:

$0.85 / 1,000 results

Developer:

Corner Ledger

Categories:

Developer tools, Lead generation

Email Deliverability & Domain Security Checker pageOutput fieldsPricing